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US 2019/0295587 A1Published application
Magnetic tape and magnetic recording and reproducing device
AssigneeFUJIFILM Corporation
InventorNorihito KASADA
Life of this patent
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Abstract
The magnetic tape includes a non-magnetic support; and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, in which an absolute value ΔN of a difference between a refractive index Nxy measured regarding an in-plane direction of the magnetic layer and a refractive index Nz measured regarding a thickness direction of the magnetic layer is 0.25 to 0.40, and a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050.
Claims6
A magnetic tape comprising:
- a non-magnetic support;
- and
- a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support,
- wherein an absolute value ΔN of a difference between a refractive index Nxy measured regarding an in-plane direction of the magnetic layer and a refractive index Nz measured regarding a thickness direction of the magnetic layer is 0.25 to 0.40, and
- a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding a surface of the magnetic layer is equal to or smaller than 0.050.
2 more elements
Dependencies are inferred from the claim text.